基于数据流的结构化功能安全分析方法

Structured Functional Safety Analysis Method Based On Data Stream

阐述一种基于数据流的结构化功能安全分析方法,应用FTA、FMEA和HAZOP等经典分析手段,面向安全苛求系统进行危害识别和原因分析。对系统建立通用、分层的模型后,自顶向下进行结构化分析,并以数据流为纽带分析存在数据交互的相关单元;对存在关联关系的分析对象,其分析结果能相互验证;将该方法应用于应答器传输模块(BTM)的应答器探测功能,取得了良好的效果。

This paper introduces a structured functional safety analysis method based on data stream,which combines the analysis methods of FTA,FMEA and HAZOP and can be used for hazard identification and causal analysis of safety-critical systems.After setting up ageneral and hierarchical model for the system,a top-down structured analysis can be carried out and interrelated modules with data exchange can be studied based on their data streams.The analysis results of related objects can be checked against each other.This method has been applied to the Balise Detection function of Balise Transmission Module,or BTM for short,and good results has been attained.